Pollenizing the Amaryllis
After many years of failure in attempting to improve the amaryllis, Mr. Burbank was successful only when he had learned the peculiarity of this flower, which is clearly shown in the color photograph print above. The pistil, as will be seen, is longer than the stamens, and appears at first with a stubby end, which later divides into three lobes. In the case of the amaryllis the pistil does not become receptive until the flower itself is withered, as is shown in the upper left-hand corner above. Only when the flower itself has faded does the pistil open up its three sticky lobes, and only then can pollenization be accomplished.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 9 Chapter 3